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FFmpeg is the leading multimedia framework, able to decode, encode,
transcode, mux, demux, stream, filter and play pretty much anything that
humans and machines have created. It supports the most obscure ancient
formats up to the cutting edge.

This library performs highly optimized image scaling and colorspace and
pixel format conversion operations.
Specifically, this library performs the following conversions:
* Rescaling is the process of changing the video size. Several rescaling
options and algorithms are available. This is usually a lossy process.
* Pixel format conversion is the process of converting the image format
and colorspace of the image, for example from planar YUV420P to RGB24
packed. It also handles packing conversion, that is converts from
packed layout (all pixels belonging to distinct planes interleaved in
the same buffer), to planar layout (all samples belonging to the same
plane stored in a dedicated buffer or "plane"). This is usually a lossy
process in case the source and destination colorspaces differ.